Three-phase soft-switching inverter resonant with unique resonantsnubbers

摘要

In this paper, a prototype of the auxiliary resonant commutatedsnubber circuit (ARCS) with a high frequency transformer powerregeneration loop is described. This is a new soft switching topologydeveloped for three phase voltage source soft-switching inverter, activepower filter and reactive power compensator has the significantadvantage of current rating reduction for auxiliary active switchingdevices. In addition, this paper presents a novel prototype ofvoltage-source soft switching space vector-modulated inverter with ARCSmentioned above, which is more suitable and acceptable for high-powerutility interactive power conditioning, along with a digital controlscheme. The steady-state operating analysis of ARCS has the remarkablefeatures and the practical design procedure of this resonant snubber areillustrated on the basis of computer simulation analysis. The operatingperformance evaluations in the steady-state of this three phase voltagesource soft switching inverter are discussed and compared with the threephase voltage source hard switching inverter